Luke Gedeon

The default position for the menu in WordPress 2.7 is on the left, but since the scroll-bar is on the right, some people wanted the menu over there too. Plus a lot of blogs/websites have menus on the right so menu on the right seems to be a pretty popular option.
This plug-in moves WordPress admin menu to the right side of the screen.

Admin Menu on Right

Moves WordPress admin menu to the right side of the screen.

jaschaephraim

Ideal for using WordPress as a CMS, Page Management Dropdown expands the Pages administration menu by adding a link to edit each of your individual pages.

Page Management Dropdown

Adds a link to edit each individual page to the Pages admin menu.

Admin Menu on Right vs Page Management Dropdown